A102238 Smallest number equal to the product of two primes which is also equal to the sum of n distinct primes.

9, 10, 21, 34, 49, 58, 77, 106, 129, 166, 201, 254, 287, 334, 381, 454, 501, 586, 655, 718, 791, 898, 985, 1082, 1167, 1282, 1371, 1486, 1623, 1754, 1851, 2018, 2127, 2302, 2427, 2594, 2747, 2942, 3093, 3274, 3459, 3646, 3831, 4034, 4227, 4474, 4661, 4894

Offset

2,1

Links

Table of n, a(n) for n=2..49.

Example

a(2) = 9 = 3*3 = 2+7;
a(3) = 10 = 2*5 = 2+3+5;
a(4) = 21 = 3*7 = 2+3+5+11;
a(5) = 34 = 2*17 = 2+3+5+7+17;
a(6) = 49 = 7*7 = 2+3+5+7+13+19;
a(7) = 58 = 2*29 = 2+3+5+7+11+13+17.

Crossrefs

Sequence in context: A022314 A178350 A085949 * A104646 A214425 A260184

Adjacent sequences: A102235 A102236 A102237 * A102239 A102240 A102241

Keyword

nonn

Author

Giovanni Teofilatto, Feb 18 2005

Extensions

Corrected and extended by Ray Chandler Feb 25 2005

Status

approved